多层螺旋CT后处理技术在局灶性肺炎的临床应用

Clinical application of multi-slice spiral CT post-processing technique in focal pneumonias

目的探讨多层螺旋CT后处理技术对局灶性肺炎的诊断价值。方法多层螺旋CT扫描经病理证实的局灶性肺炎35例,分析薄层重建、多平面重建(MPR)及容积显示技术(VRT)对局灶性肺炎征象的显示及价值,并与常规横断面对比分析。结果35例病灶均位于肺野周边部,病变以宽基底与胸膜相连26例,病变边缘呈锯齿状或有粗长毛刺28例,具有周围血管充血聚拢25例,多层螺旋CT薄层重建、MPR及VRT在显示局灶性肺炎的形态、支气管血管集束征及与胸膜的关系方面优于常规横断面。结论多层螺旋CT通过薄层重建配合MPR、VRT能够克服横断扫描限制,在不增加病人辐射剂量的情况下,能够更加直观、立体地显示局灶性肺炎的基本征象,为局灶性肺炎的诊断提供更多信息。

Objective To evaluate the value of multi-slice spiral CT(MSCT)post-processing technique in diagnosing focal pneumonias.Methods Thirty-fivepatientswith focalpneumonia proved pathologically were studied with MSCT.After scanning,retrospective thin-slice reconstruction,multi-planar reconstruction(MPR)and volume rendering technique(VRT)images were obtained.These images were analyzed and compared with conventional axial images.Results All 35 lesions were located in peripheral lung field.Extensive pleural thickeni...